The wind blows where it wills, and you hear the sound thereof, but can not tell from where it came, and where it goes: so is everyone that is born of the Spirit.
Read Chapter 3
George Leo Haydock
The Spirit breatheth where he will. The Protestant translation has the wind: and so it is expounded by St. Chrysostom and St. Cyril on this verse; as if Christ compared the motions of the Holy Spirit to the wind, of which men can give so little account, whence it comes, or whither it goes. Yet many others, as St. Augustine, St. Ambrose and St. Gregory, understand this expression of the Holy Spirit, of whom it can only be properly said, that he breatheth where he will. (Witham)